Vijai Shankar Bhavani Shankar

ORCID: 0000-0002-5679-8264
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About
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Research Areas
  • Advanced Combustion Engine Technologies
  • Biodiesel Production and Applications
  • High-Temperature Coating Behaviors
  • Catalytic Processes in Materials Science
  • Heat transfer and supercritical fluids
  • Nuclear Materials and Properties
  • Combustion and flame dynamics
  • Vehicle emissions and performance
  • Advanced ceramic materials synthesis
  • Tribology and Lubrication Engineering
  • Thermochemical Biomass Conversion Processes
  • Chemical Thermodynamics and Molecular Structure
  • Atmospheric chemistry and aerosols
  • Metal and Thin Film Mechanics
  • Thermal and Kinetic Analysis
  • Blockchain Technology Applications and Security
  • Digital and Cyber Forensics
  • Advanced Aircraft Design and Technologies
  • Human Pose and Action Recognition
  • Zeolite Catalysis and Synthesis
  • Radical Photochemical Reactions
  • Welding Techniques and Residual Stresses
  • Nuclear materials and radiation effects
  • Catalysis for Biomass Conversion
  • Refrigeration and Air Conditioning Technologies

King Abdullah University of Science and Technology
2014-2020

Christ University
2018-2020

University of Science and Technology
2016-2017

Princip (Czechia)
2016

Saudi Aramco (United States)
2016

University of Connecticut
1991-1992

This work provides new temperature-dependent mole fractions of elusive intermediates relevant to the low-temperature oxidation dimethyl ether (DME). It extends previous study Moshammer et al. [ J. Phys. Chem. A 2015 , 119 7361 - 7374 ] in which a combination jet-stirred reactor and molecular beam mass spectrometry with single-photon ionization via tunable synchrotron-generated vacuum-ultraviolet radiation was used identify (but not quantify) several highly oxygenated species. Here,...

10.1021/acs.jpca.6b06634 article EN The Journal of Physical Chemistry A 2016-09-17

Due to stringent emission standards, the demand for higher efficiency engines has been unprecedentedly high in recent years.Among several existing combustion modes, pre-chamber spark ignition (PCSI) emerges be a potential candidate high-efficiency engines.Research on concept exhibit indicated through lean limit extension while maintaining stability.In this study, unique geometry was tested single-cylinder heavy-duty engine at low load conditions.The features narrow throat, which designed...

10.4271/2019-24-0107 article EN SAE technical papers on CD-ROM/SAE technical paper series 2019-09-09

Primary Reference Fuels (PRFs) -binary mixtures of n-heptane and iso-octane based on Research Octane Number (RON) -are popular gasoline surrogates for modeling combustion in spark ignition engines.The use these two component to represent real fuels simulations HCCI/PCCI engines needs further consideration, as the mode is very different (i.e. process mainly controlled by reactivity fuel).This study presents an experimental evaluation PRF four termed FACE (Fuels Advanced Combustion Engines) A,...

10.4271/2016-01-0748 article EN SAE technical papers on CD-ROM/SAE technical paper series 2016-04-05

The concept of double compression, and expansion engine (DCEE) for improving the efficiency piston reciprocating engines was introduced in SAE Paper 2015-01-1260. This configuration has separate high, low pressure units thereby effectively reducing friction losses high effective compression ratios. presence an additional expander stage also theoretically allows extra degree freedom to manipulate combustion heat release rate so as achieve better optimum between transfer, losses. paper...

10.4271/2017-01-0636 article EN SAE technical papers on CD-ROM/SAE technical paper series 2017-03-28

The Double compression expansion engine (DCEE) concept has exhibited a potential for achieving high brake thermal efficiencies (BTE).The effect of different components on system efficiency was evaluated in this work using GT Power simulations.A parametric study piston insulation, convection heat transfer multiplier, expander head insulation connecting pipes, ports and tanks, the intake valve lift profiles conducted to understand critical parameters that affected efficiency.The simulations...

10.4271/2018-01-0890 article EN SAE technical papers on CD-ROM/SAE technical paper series 2018-04-03

Ceramic Thermal Barrier Coatings (TBCs) provide protection to metals from degradation at high temperature. A major factor deciding the effectiveness of coating in service is temperature drop across thickness coating. Common practice determine subject with a heat providing flame preset velocity by using combustible gases focused towards coated surface, that keep surface desired stabilization and measured back side coating, i.e. metal side. The challenge complete specimen reach an accurate as...

10.1063/1.5131603 article EN AIP conference proceedings 2019-01-01

Ceramic based coatings are routinely being engineered to protect metallic components from high temperature environments in applications like gas turbines and jet engines.However, although a wellresearched technology, detailed realistic information on the effects of thermal barrier (TBCs) improving performance commercial diesel engines is either classified or inconsistent.Additional by means lab scale analytical evaluation TBCs prepared 8%Y 2 O 3 -ZrO plasma sprayable powders (prepared...

10.14810/ijmech.2016.5201 article EN International Journal of Recent advances in Mechanical Engineering 2016-05-31

Increasing the anti-knock quality of gasoline fuels can enable higher efficiency in spark ignition engines.In this study, blending dicyclopentadiene (DCPD), a by-product ethylene production from naphtha cracking, with various is explored.The blends were tested an tester (IQT) and modified cooperative fuel research (CFR) engine operating under homogenous charge compression (HCCI) knock limited advance (KLSA) conditions.Due to current regulations, ethanol widely used as component many...

10.4271/2017-01-0804 article EN SAE technical papers on CD-ROM/SAE technical paper series 2017-03-28
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